efi_loader: Make HII a config option

Heinrich ran into issues with HII and iPXE which lead to #SErrors on
his Odroid-C2 system. We definitely do not want to regress just yet,
so let's not expose the HII protocols by default.

Instead, let's make it a config option that people can play with
This way, we can stabilize the code in tree without breaking any
users.

Once someone figures out, why this breaks iPXE (probably a NULL
dereference), we can enable it by default.

Reported-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Signed-off-by: Alexander Graf <agraf@suse.de>

---

v1 -> v2:

  - Remove HII selftest as well

v2 -> v3:

  - Make config option
diff --git a/lib/efi_selftest/Makefile b/lib/efi_selftest/Makefile
index 779f549..7f4eafb 100644
--- a/lib/efi_selftest/Makefile
+++ b/lib/efi_selftest/Makefile
@@ -25,7 +25,6 @@
 efi_selftest_exitbootservices.o \
 efi_selftest_fdt.o \
 efi_selftest_gop.o \
-efi_selftest_hii.o \
 efi_selftest_loaded_image.o \
 efi_selftest_manageprotocols.o \
 efi_selftest_memory.o \
@@ -41,6 +40,7 @@
 efi_selftest_watchdog.o
 
 obj-$(CONFIG_CPU_V7) += efi_selftest_unaligned.o
+obj-$(CONFIG_EFI_LOADER_HII) += efi_selftest_hii.o
 
 ifeq ($(CONFIG_BLK)$(CONFIG_PARTITIONS),yy)
 obj-y += efi_selftest_block_device.o